How to setup a backup NameServer?
rob0 at gmx.co.uk
Mon Apr 28 12:01:30 UTC 2014
On Mon, Apr 28, 2014 at 03:30:40AM +0000, houguanghua wrote:
> Does bind support backup nameserver? This nameserver isn't
> regeristered and not accessed in normal situation. Only when
> all authority NSs is down, this backup nameserver will be
> accessed by Local DNS server.
I guess what you want is a "hidden slave", just like an ordinary
slave nameserver except not listed as one of the NS hosts.
> How to configure this backup NS
In the master's zone statement, you need an "also-notify" to send
notifies to this slave. It also should be listed in your
"allow-transfer" setting for that zone.
> and how to configure in the local DNS server?
Numerous possibilities exist there. A "type forward" or "type stub"
or even "type slave" (where the local DNS server slaves from the
hidden slave as its master) are among them.
The BIND 9 ARM is a very good resource. Chapter 6 is the main
reference part, but you might find useful examples in Chapter 4.
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